VulnerabilityModified
CVE-2021-4122
An attacker with physical access to the medium, such as a flash disk, could use this flaw to force a user into permanently disabling the encryption layer of that medium.
MEDIUM 4.3EPSS 0.31%
Does this matter?
Lower severity and a low EPSS score (0.31%). Track it; it rarely justifies an emergency change on its own.
Description
It was found that a specially crafted LUKS header could trick cryptsetup into disabling encryption during the recovery of the device. An attacker with physical access to the medium, such as a flash disk, could use this flaw to force a user into permanently disabling the encryption layer of that medium.
- CVSS 3.1
- 4.3 MEDIUMCVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
- EPSS
- 0.31% probability · 23th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-345
- Affected
- cryptsetup project/cryptsetup
- Source
- secalert@redhat.com
References
- https://access.redhat.com/security/cve/CVE-2021-4122Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2031859Permissions Required, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2032401Issue Tracking, Third Party Advisory
- https://gitlab.com/cryptsetup/cryptsetup/-/commit/0113ac2d889c5322659ad0596d4cfc6da53e356cPatch, Third Party Advisory
- https://mirrors.edge.kernel.org/pub/linux/utils/cryptsetup/v2.4/v2.4.3-ReleaseNotesRelease Notes, Vendor Advisory
- https://access.redhat.com/security/cve/CVE-2021-4122Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2031859Permissions Required, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2032401Issue Tracking, Third Party Advisory
- https://gitlab.com/cryptsetup/cryptsetup/-/commit/0113ac2d889c5322659ad0596d4cfc6da53e356cPatch, Third Party Advisory
- https://mirrors.edge.kernel.org/pub/linux/utils/cryptsetup/v2.4/v2.4.3-ReleaseNotesRelease Notes, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.